LMMS / LMMS/lmms

Nightly: libcarla_native-plugin.dll corrupts user profile on Windows 11 after reboot

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bug
Dominant language
C++
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Description

### System Information

Windows 11 Laptop: Machenike StarX15 Pulsar CPU: Intel Core i5 GPU: Nvidia RTX 4050 (Laptop) Antivirus: Kaspersky (note: false positive on the file, details below)

### LMMS Version(s)

lmms-1.3.0-alpha.1.1005+f4d5957-mingw-win64.exe Downloaded from: https://lmms.io/download#windows (nightly tab)

### Most Recent Working Version

_No response_

### Bug Summary

After installing the nightly build, rebooting the PC results in a Windows error:

"Службе профилей пользователей не удалось войти в систему.
Невозможно загрузить профиль пользователя."
(The User Profile Service failed the logon. User profile cannot be loaded.)

The file responsible is `libcarla_native-plugin.dll` located in `plugins\optional`.

Additional note: Kaspersky detects this file as `VHO:Trojan.Win64.Agentb.gen` (false positive, VirusTotal score 2/67).

### Expected Behaviour

Installing LMMS and rebooting should not corrupt the user profile or prevent login.

### Steps To Reproduce

1. Disable Kaspersky (it blocks the installer due to the false positive on libcarla_native-plugin.dll).
2. Download and install lmms-1.3.0-alpha.1.1005+f4d5957-mingw-win64.exe.
3. Do NOT launch LMMS. Do NOT remove any files.
4. Reboot the PC.
5. Attempt to log in. The error "The User Profile Service failed the logon" appears.

Workaround: delete or rename `libcarla_native-plugin.dll` before rebooting. The problem does not occur without this file.

### Logs

Click to expand

  

### Screenshots / Minimum Reproducible Project

_No response_

### Please search the issue tracker for existing bug reports before submitting your own.

- [ ] I have searched all existing issues and confirmed that this is not a duplicate.

Contributor guide

No contributing guide indexed for this repository

Research direction

Start with the nightly installer and the plugins\optional\libcarla_native-plugin.dll identified in the report, then reproduce the installation and reboot sequence on Windows 11 without launching LMMS. Trace why this file causes the User Profile Service login failure and verify that installing the nightly build no longer prevents login while preserving the plugin’s expected behavior.

Written by the indexing model from the issue text.

Assessment

Tech stack
cpp
Domain
desktop-dev, operating-systems
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Quiet
Clarity
Mostly clear
Newbie friendliness
45/100

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